Measurement
Conditions
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starting part of the rising slope (or descending slope) through the zero point
(intermediate value of amplitude) to the ending point of the rising slope (or
descending slope) through the zero point (intermediate value of amplitude).
However, the measurement interval which determines the maximum
voltage or current is within the overall data updating cycle. Therefore, the
measurement of Ipk+, Ipk-, Upk+, Upk-, Ucf and Icf calculated based on the
maximum voltage and current also adopts the data updating cycle as the
measurement interval.
The rising or descending edge is selected automatically to prolong the
measurement interval.
If there is only one or no rising slope or descending slope within the data
updating cycle, the data updating cycle is taken as the measurement
interval.
The input signal to be used as the synchronization source can be set in
each unit (for synchronization with the zero point of that input signal). The
overall interval of the signal voltage, current or data updating cycle can be
selected as the synchronization source for measurement.
NOTE
The data updating cycle refers to the cycle used for calculating sampling data of the
measurement function. It is identical to the set value of the data updating rate.
The slope refers to signal changes from low level to high level (rising edge) or from high level to
low level (descending edge).
Measurement interval for harmonic measurement
At the sampling frequency of harmonic measurement, the measurement interval
refers to the first point 1024 from the data updating cycle. The sampling
frequency of harmonic measurement is determined automatically by the signal
cycle set as the PLL source in the instrument. The sampling data or
measurement interval for calculation may be different from the sampling data or
measurement interval of the measurement function in conventional
measurement.
